KR0169306B1 - Sub-picture position auto-shifting apparatus at an end of broadcasting program of multi-tv - Google Patents

Abstract

The present invention relates to a sub-screen position control apparatus of a multi-screen television, and more specifically, to detect when a broadcast program being watched on the sub-screen is terminated so that it can be automatically moved from the display position of the sub-screen to another position. The present invention relates to an automatic device for shifting the sub-screen position at the end of a broadcast program of a multi-screen television for repeatedly executing the program. According to the related art, the main screen of the PIP television as described above is reproduced and output through a speaker. In the case of the tuned sub-screen, there is a problem that it is very difficult to distinguish between the start and the end of the broadcast program because the voice is not reproduced through the speaker.

According to the present invention, when the PIP broadcast is turned on, the PIP screen is automatically shifted once every program of the broadcast channel received by the PIP so that the viewer can recognize the position shift of the PIP screen. In the vertical blanking area that distinguishes the broadcast program from the PIP broadcast reception path of a multi-screen telda screen capable television that enables the user to recognize the start and end of a broadcast program so that the program can be easily recognized even if there is no audio output. A broadcast program is terminated when the two codes do not match by separating and extracting the existing program code signal, decoding the extracted code signal, and comparing the decoded program code with the currently received program code. The control unit including the microcomputer The mobile camera generates an output, whereby the positional movement of the PIP screen is accompanied automatically when the image is multi-processed.

Description

Automatic screen position shifting device for broadcasting program of multi-screen TV

1 is a block diagram showing the configuration of a two-tuner television to which the present invention is applied.

FIG. 2 is a flowchart showing the process of automatically shifting the sub-screen position of the television shown in FIG.

* Explanation of symbols for main parts of drawing

10: first tuner 11: voice IF module

12: voice amplifier 13: voice processor

14: audio output unit 20: second tuner

21: Image IF Module 22: Image Amplifier

23: image multiple processing unit 24: image output unit

30: sync separation unit 31: code signal extraction unit

32: code signal decoding unit 33: control unit

40: Function setting part

The present invention relates to a sub-screen position control apparatus for a multi-screen television, and more particularly, to detect when one broadcast program that is being watched on the sub-screen is terminated and to be automatically moved from the display position of the sub-screen to another position. In addition, the present invention relates to an automatic sub-screen position shifting device at the end of a broadcast program of a multi-screen television for repeatedly executing the same.

Televisions that reproduce video and audio signals of broadcast programs transmitted from multiple broadcasting stations have been developed from a single channel playback method using a single tuner. In recent years, first and second tuner types have been adopted, and thus, channels of channels tuned by a second tuner are used. The broadcast signal is displayed on the main screen.

On the other hand, the broadcast signal of the channel tuned by the second tuner is displayed on the complementary screen, so that multi-screen processing is possible. Based on this, a two-tuner television can display a single screen or a screen by multiple screens. Multi-channel simultaneous viewing is possible (hereinafter, this function is simply called picture-in-picture).

As described above, the PIP television can facilitate simultaneous viewing or channel darkening through a plurality of multi-screens, thereby providing a lot of convenience.

However, according to the prior art idea, the main screen of the PIP television as described above distinguishes the start and the end of the broadcast program because the voice is not reproduced through the speaker in the case of the selected sub-screen when the voice is reproduced and output through the speaker. There is a problem that is very difficult to do.

In other words, if you watch the main screen, you will not be able to distinguish the broadcast program as to when the broadcast program of the selected sub-screen is started and ended, whether the previous program is still being broadcast, or whether a new broadcast program has been started. .

Accordingly, the present invention solves all the problems of the prior art as described above.

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The control unit including the computer moves the position of the PIP screen and generates an output, and thus the position movement of the PIP screen is automatically accompanied when the image is multi-processed.

Hereinafter, the configuration of the present invention with reference to the accompanying drawings in detail.

The first and second tuners, an audio and video IF module that detects the audio and video received by the tuner and performs intermediate frequency conversion and amplification, an audio and video amplifier that amplifies the signal, and the control of the controller. In the multi-screen television which is output to the speaker and the CRT by the audio processing unit and the image multi-processing unit for processing audio and video, and the audio and video output unit for amplifying and outputting the processed audio and video multiple signals to the audio or video, A synchronization separator 30 for receiving and receiving a synchronization signal superimposed on the television broadcast signal of the PIP channel received through the image amplifier 22, and overlapping in the vertical blanking region separated from the synchronization separator. A code signal extracting unit 31 for extracting a program identification code, a code signal decoding unit 32 for decoding the extracted code, and the decoded code signal And a control unit 33 including a microcomputer for outputting the PIP screen to move the position of the PIP screen by one step when the program code data does not match the received program code data, and the PIP screen position shift signal of the knee controller to the image multi-processing unit 23. It is configured to move the PIP screen at the end of every PIP broadcast program.

The effects of the present invention having the technical spirit as described above will be described in more detail below.

First, the block diagram of FIG. 1 will be described.

The first and second tuners 10 and 20 tune a broadcast signal transmitted from a plurality of broadcast stations under the control of the control unit 33 to receive a broadcast signal, thereby providing a first tuner for the main screen and a PIP screen. Application as a second tuner for playback.

The broadcast signals received through the first and second tuners 10 and 20 are separately processed into audio and video signals.

11 denotes an audio IF module which detects and converts and amplifies voice signals included in the broadcast signals of the main channel and the sub-channel tuned by the tuners 10 and 20, 12 denotes a signal amplifier, and 13 denotes a voice. The audio signal (ie, the main channel audio signal) processed by the IF module 11 is reproduced under the control of the control unit 33 (e.g., audio adjustment, switching processing of the audio signal when switching between the main channel and the sub channel). And the like, and 14 denotes a sound signal processing unit 13, which is amplified with a constant amplification to the sound signal processed by the sound signal processing unit 13, and applied to a speaker device (not shown or reproduced by a Remophone in the case of PIP) as an audio output device. An audio output unit provided as an audio signal Aout is shown.

These voice processing paths are composed of equal numbers in two channels.

In FIG. 1, reference numerals 21, 22, 23, and 24 denote video signals or external video signals included in broadcast signals tuned in channels tuned by the first or second tuners 10 or 20. And an IF module denoted by 21 converts IF video signals included in broadcast signals of channels tuned by the first and second tuners 10 and 20, and converts the signals through the image amplifier 22. To be amplified.

In addition, the image multiple processing unit 23 denotes the main screen and the sub picture under the image multiple mode (PIP function) inputted by the PIP selection button of the control signal input unit 40 with respect to the image signal provided from the image IF module 21. Performs processing related to image multi-processing of the screen or adjustment of luminance / contrast or superimposes OSD text signal generated for display of a channel that can be viewed at a present time, for example, generated by a normal OSD processing unit. The image output unit amplifies the image signal processed by the image multiple processing unit 23 to a predetermined amplification, and provides the image signal to a CRT apparatus as an image output apparatus in which display of a sub-screen by a PIP function is assumed.

40 is a function setting section, which sets a function of the control section 33 in response to a key or remote controller input.

In the above-described image processing section, the image amplifying section 22 serves to separate the synchronization signal (program synchronization signal) of the broadcast signal included in the video signal.

The separated synchronization signal extracts a program code signal superimposed and transmitted in the vertical blanking area through the code signal extracting unit 31.

The extracted code signal is decoded as a predetermined code via the code signal decoding unit 32, and the decoded program code signal is provided to the control unit 33 including the miter computer.

According to such program code signal processing, PIP position shift is realized.

This position shift process can be more clearly seen with reference to a flowchart showing a process of automatically shifting the sub-screen position of the television in FIG.

As described above, in the state where the viewer simultaneously views the main picture and the sub picture through a plurality of tuners (S1), the synchronization separator 30, the code signal extractor 31, and the code signal decoder 32 are used. The control unit 33 including the microcomputer recognizes the code signal for the extracted and tuned PIP broadcast television program as data (S2) and stores it in the ordinary temporary storage element.

When the code signal for the broadcast program different from the stored code data is recognized as data by repeating the above-described process after the temporarily stored code data, the microcomputer of the controller 33 compares and operates the recognition code data and the received code data. When S1 is not the primary (S3), the control unit 33 generates a PIP position shift signal, and the image multi-processing unit 23 performs the PIP screen position shift by the PIP position shift signal.

Based on this, the first step position shift S5 of the PIP screen on the screen is realized by the CRT output Vout through the image output unit 24.

Of course, when it is determined in step S3 that the recognition code data and the reception code data match, it is recognized that the PIP screen is the same broadcast program continuously to maintain the current PIP screen position (S4). Control is executed.

According to the present invention as described in detail above, when watching the PIP screen and the main screen that can receive voice on a separate remote phone at the same time, one broadcast program received by the PIP is ended, and once another program starts PIP By shifting the screen, the main screen viewer without voice playback can easily recognize the switching of the program by moving the PIP screen.

Claims (1)

It consists of first and second tuners, audio and video IF modules, audio and video amplifiers, and audio and video processing units for processing audio and video under the control of the controller, audio and video output units, speakers, and CRTs. In a screen television, a synchronization separator (30) for separately receiving a synchronization signal superimposed on a broadcast signal of a PIP channel received through the video amplifier (22), and overlapping in the vertical blanking region separated from the synchronization. A code signal extracting unit 31 having a program identification code extracting function, a code signal decoding unit 32 having an extracted code decoding function, and a PIP when the decoded code signal does not match the currently received program code data. A control unit 33 including a microcomputer for outputting a screen by one position shift, and a PIP screen position shift signal of the control unit provided to the image multi-processing unit 23 A sheet PIP PIP broadcast program at the end of the television screen, characterized in that the screen is configured to be moved location broadcast program at the end of the sub-screen where the mobile device automatically.